Syntax file for tox.ini

dosini.vim

" Vim syntax file
" Language:               Configuration File (ini file) for Python's tox
" Version:                0.1
" Original Author:        Alfredo Deza


" For version 5.x: Clear all syntax items
" For version 6.x: Quit when a syntax file was already loaded
if version < 600
  syntax clear
elseif exists("b:current_syntax")
  finish
endif

" shut case off
syn case ignore

syn match  dosiniLabel    "^\w*"
syn region Preproc  start="^\s*\[" end="\]"
syn match  dosiniComment  "^[#;].*$"
syn region dosiniComment start="^\s*#" end="$"
syn region Number start="{" end="}"

" Define the default highlighting.
" For version 5.7 and earlier: only when not done already
" For version 5.8 and later: only when an item doesn't have highlighting yet
if version >= 508 || !exists("did_dosini_syntax_inits")
  if version < 508
    let did_dosini_syntax_inits = 1
    command -nargs=+ HiLink hi link <args>
  else
    command -nargs=+ HiLink hi def link <args>
  endif

  HiLink dosiniNumber   Number
  HiLink dosiniHeader   Special
  HiLink dosiniComment  Comment
  HiLink dosiniLabel    Type

  delcommand HiLink
endif

let b:current_syntax = "dosini"

" vim: sts=2 sw=2 et

Place it in ~/.vim/syntax/ and go to town on tox.ini files

Thanks a lot!